Calcite with Dolomite and Quartz

Malaespera Mine, Barrio de la Peña, Bilbao, Comarca Gran Bilbao, Vizcaya / Bizkaia, Basque Country (Euskadi)  Spain (1997)

Specimen size: 7.7 × 5.7 × 2.6 cm = 3.03” × 2.24” × 1.02”
Main crystal size: 5.8 × 2.4 cm = 2.28” × 0.94”